Sound recording and reproducing machine.



v w. w. ZACKEY. SOUND RECORDING AND REPBODUGING MACHINE.

APPLIOATION TILED JANA; 1912.

Patented Jul 15, 1913.

' such rs rarnn'r nion 'WILLIAM W. ZACKEY, 0F PHILADELPHIA,PENNSYLVANIA, ASSIGNOR 01E"v FORTY-NINE ONE-HUNDREDTHS TO CHARLES B.HEWITT, OF BURLINGTON, NEW JERSEY.

SOUND RECORDING AND REPRODUCING MACHINE.

Specification of Letters Patent. 7

Patented July 15, 1913.

Application filed January 4, 1912. Serial No. 669,590.

T 0 all whom it niay concern v Be it lcuown that I, WILLIAM W. ZACKEY, acitizen ofthe United States, residing in the city and county ofPhiladelphia, State of Pennsylvania, have invented a new and usefulSound Recording and Reproducing Machine, of which the following is aspecification.

This invention relates to sound recording and reproducing machines, andmore particularly to an improvement in sound boxes as shown in my formerPatent N 0. 930,715, patented August 10, 1909.

The object of my invention is to provide a sound box which reducesmetallic or scratch ing noises common type, and which noises mar anddestroy the reproduction of the sound and cause the quality of the toneto be impaired. It has for a further object to provide a sound box whichproduces a tone rich in quality, I more a tone which ma be varied oradjusted so that the voice timbre may be accurately simulated andreproduced.

It further consists of other novel features of construction, all as willbe hereinafter fully set forth.

eferring to the drawing z-Figure 1 represents a perspective of a s ndbox embodying my invention. Fig. 2 represents a rear elevation of thesame. Fig. 3 represents a vertical section on line 00-02: Fig. 2.

lg. 4 represents a perspective detail of the controlling member. Fig. 5represents a dctail of one of the ears for supporting the stylus.Similar numerals of reference indicate corresponding parts in thefigures.-

1 designates the sound box of 'a. sound recording and reproducingmachine, preferably of ordinary shape and size, and, in the presentinstance, consisting of a ring 2 having an annular flange 3, preferablyintegral therewith, the two members forming a. casing or retainingchamber in which is located a diaphragm 4:, the latter being of suitablematerial for receiving and transmitting sound waves. This diaphragm 4,as here shown, is secured within the flange 3 by means of tubularmembers 5 and 6 which are preferably of rubber or like sound deadentoinstruments of this clearness and purity, and further",

concentrated so as to pass through the opening 8 to the amplifyingdevices.

10 designates the stylus bar composed, .in the present instance, ofportion 12 which are preferably secured together by providing a likemeans, and as here shown, I have preferred to use also a pin 15 as anadditional fastening for this arm, since any looseness of the stylus barcauses imperfections to at once he noted in the tone of the box, and itis therefore essential that the same should be firmly fixed to itssupporting member. The

an arm 11 and groove 13 in the 1118111". ber 12 and within which the arm11 is seat. ed ad securely fastened by solder 14, or the arm 11 ispreferably secured at" one end to the diaphragm at by wax or like meansand,

.as here shown, the end of the said arm is suitably bent as shown at 17,to bring the same into position at the center of the diaphragm 4.

The body portion 12 of the stylus bar 10 is suitably pivoted upon a pinor arbor 18, the'latter being mounted as here shown, in cars 19 attachedto the flange 3 of the ring 2, and it will be noted that these ears arepreferably provided with a'rounded corner 20, for a purpose presently tobe described. These ears form hearings in which the arbor 18 is mountedand the body member 12 is fixedly secured to the arbor 18 by means of aset screw 21 or the like.

22 designates an opening formed in the body portlon 12 for the purposeof receiving the playing needle and the latter is-held in position bymeans of the.thumb screw- 22; as

is customary.

24 designates a stud secured in any suitable manner to the body portion12 of the stylus bar 10, and in the present instance,

' passes through a slot '25 formed in a spring plate 26, the latterbeing held in adjustable position on the said pin 24.- by means of nuts27 as will be apparent. This plate 26 is preferably provided withspringfingers 28 outwardly disposed on the same side of the plate 26 andlocated so as to en age respectively' the rounded corners 20 o the cars19 heretofore referred to. The function of this spring plate will bereadily apparent as it iifYiS 0 i-ei'mfn the stylus ear to marine}wwiiion after he sound wave has 0 lier-giwi on the diaphragm 4 and bywhich he latter 1; deflected fmm 1U; usual QOSltlOil m3. he adj :stmentof the nuts ]4 ;j11iiltil)l'l of ihe spying piuiie 5e mine theriegi'i'ee of Flexibility of the ciizv pin'n zni. Of course it will beunderemod iii-m the slut 25 iii ih spyin g plate 526 eiiows f rvariation in the pesiUc-n of fee s jii-ing' lingers 28. thereby."aryiiig The QiifG'aC'iiYG 'iSLHE of these two ziieniibere.

It will now be apparent that I have 1)1O- Killed a gound box, having a,stylus bai- HJULUHIQGL on a single eupper and 01i ei' zn'1e i 1 :1preferred embodiment been found in practice U setisfnetm'y and reliableresnhe, it is to be nndeysiioe i that sun-1e susceptible 0:1?modification in uifieus particulars with- 011? deeming r0211 1e sJiYit0.1. scope 0f iii. ina'eniioii or aer'iieing any of iis miYzinanddescribei thereof when has Wing "thus desscribed my invention, Whatchain: s new LUJIU. desire to secure by Let-- 301's Patent is In a soundreeorfiin end repreducing insicfisine, a sound 0031. 7 iphi'agn'ioperative fiiei'eiu, an :ireiwz suitably mouiiied riating zniir'x'emeni,a stylus bar fixcarried by Sui C. arbor, :1 spring piete .ied. by saidius bar and projecting on spring finger int can I I miner. side them-0f,1L axiih each end eff *liifi plate, an

em I i aid b fern!" fiegee and me i em'ing fi when 072 sand.

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